Answer:
Sunday
Step-by-step explanation:
There is holiday after every 4 days
The last holiday was on Friday.
So,
Last holiday - Friday
After 4 days - Tuesday
After 8 days - Saturday
After 12 days - Wednesady
After 16 days - Sunday
After 20 days - Thursday
After 24 days - Monday
After 28 days - Friday
...... ............
After 56 days - Friday
After 60 days - Tuesday
After 64 days - Saturday
After 68 Days - Wednesday
After 72 days - Sunday